Pump



Fatented June 8, 1926.

JOHN A. GROSVENOR, OF NORTON, KANSAS, ASSIGNOR TO C. G. PAGE, OF NORTON,KANSAS.

PUMP.

Application filed January 11, 19%6.

The present invention relates to pumps and more especially to valvedpistons therefor, and aims to provide a novel and improved valved pistonconstruction.

Another object of the invention is the provision of a novel and or.controlling the ilo between a tubular or stem and the interior improvedpiston head w of air or other fluid hollow piston rod or orn the pumpcylinder.

hereinafter described and claimed, it being understood that changes canloe made within the scope of what is claimed, without departing 'fromthe spir it ot the invention.

The invention is illustrated in the accoi panying drawing, wherein-Figure 1 is a median axial section ot' the improved piston.

Fig. 2 is a lower end View thereof.

Fig. 3 is a cross se ot Fig. 1.

The piston rod or ction-on the line 3 3 stem 6 is tubular or hollow andreciprocates within the cylinder 7 of the air or other fluid pump, andthe inner end of the rod 6 is closed in any suitable manner, such as bya plug 8 screwthreaded or otherwise secured therein.

Leather or other fl eXible packing cups 9 forming parts ot the pistonhead have their rims extending in opposite directions away from oneanother and bearing against the cylinder 7. The inner edge portion ofeach packing cup 9 is clamped between the outturned flange 1() of asleeve or hub 11 and a clamping` ring or collar 12 screw-threaded orotherwise secured on the sleeve 11. The flanges 10 ot the two packingcups are disposed at those ends of the sleeves 11 nearest to one anotherand The openings 13 et larger diameter than to provide annular s providecheck valves. the sleeves 11 are ot the piston rod 6 so as paces orpassages between said sleeves and rod through which the fluid may flow.

The sleeves 11 fare mounted loosely oii'the piston rod to havelongitudinal movement with reference to the rod, and the movement of thesleeves away from one another is limited by any suitable means. Thus,` apin 1a entends through the Vplug to limit the downward movement ofthelower Sleeve ii, ae shown,

and a pnl or luga ,1.6 a

re secured to the ifod 6 Serial No. 80,629.

to limit the upward movement ot the upper sleeve 11 with reference tothe rod 6.

though the device is described with the axis vertical, it is of courseapparent that the device may be used in any position.

A collar 16 is secured on the piston rod 6 between tlie sleeves 11, suchas by screw-threading the collar on t1 ie rod, and a port 17 ei;-

teiids radially through the collar 16 and rod 7 to communicate with thepassage ot the rod 6 for the tlow ot air or fluid into the cylinder 7.

rlhe collar 16 is oia smaller di As shown,

he piston is double-acting- Suppose the devicev to be used as an airpump, similar to the air pump disclosed in my Patent No. 1,509,595,granted `September 23, 1924, with the air entering through the pistonrod, the sleeve 11 carrying the packing cups will control the flow otairr into the cylinder above and below the piston head. Thus, when thepiston rod 6 is moved upwardly, as shown by the arrow in Fig. 1, the airin the upper portion of the cylinder is raised and compressed or ejectedby the uppei packing cup 9, and the air pressure will move the upperpacking` cup and sleeve 11 downwardly on the rod 6, thereby seating theflange or valve portion 10 ot the upper sleeve 11 against the uppergasket 18. This will close the opening 13 of the upper sleeve The-friction ot ythe lower packing cup the chamber below the piston.

When the piston is moved downwardly, the rod 6 and sleeves 11 are movedrelatively to one another thereby seating the lower gasket 1S against'the flange or valve po'rtionl() ot thel lower sleeve 11, to close theopening 13 tlf the lower sleeve, land the collar 16 and upper sleeve 11are sep ted., 'that air may enter Cjf'liniler, the opening' ett the lbelow the piston .is eenipreeeeiV downwardlyv the air is i upper Sleeve11 into the up through the port 1T and opening' i8 of the i i e a thecylinder above the pis l while the clownwaril movement ol" th pimovements of the sleeves il a collar 16 and valve 1S :L i ,n the Stoppins or luge le; unil le, :nf he apparent tl ntthe sleeves ll. l Seatagainst the t;

piston rod G in re' sleeve ll and upper peeling; e nated. rEhen, whenthe pieter lower portion oit the e231 piston rod is ruis-.eil nii' nithe pis-ten rozl and below the pieton.

port l? -lavinej thus cleeerihecl tht inreion 'what is elainiecl newisr-- l. In a nunr ni sage, a Coller on t eel loosel.;Y on the L weeenthe roel and a oortion thereon to en one enfl portion oi the eleeveanja'ne Said coller to close the el ,eve when vthe rofl veel ionrelativelv to the fler eve aLd collar being;` e vle i eil in theojposn'e tln'eeti ie cylinder, een. i x l i the sleeve.y and theopening` et when the sleeve andV cellar :ire een `into the cylinderhei'on tahlisl'iing' eoinn'inniention hetv-:een 1l 7 i .and theeylinrler ehnniher hevonrl the opposite enel et the sleeve.

2. In a pninp. e pi toi Segre. a Collar on the reil innnient-ing` withsaid sent at. one sitle. n `leer the rod tor the flow of ni and ele-ereand l nving a valve nortien enfl to hear against saiil to @lof-1e tieopening o'l" the Sleeve when the roc in .one direction relatif-:elif tet anrl Said Sleeve and Collar hei 'n when the eil inoverl in the tionrelatively to the o vlinile means mounten on sent elem e e ene' thesleeve and Collar are #epee communication between 3. In a puinp, acylinder. a pieterA "on said cylinder and having' a passage? e ,llnr

LY1 1,5m eee portion therel having an ext'mle with Sleeve tor end stopon the rotl 'to liinit the inovenfe't ol the Sleeve away Yironi sr, l

i Collar7 Saifl having a port opening' into the erlinfler lieve-ul saidentl portie-n ot' the sflee.' and the opening of the sleeve, wl 1,.eleve nniil collar are sepaaef communication between eaicl k eynn-flerehnmher hefrone the oppo the sleeve.

4. In e pump, a i s rod having a age, Collar on the rofl having og 'elveseats and a port between Seit Communicating wit Said pae'sage, unil :l f.-nonntefl loof n the roel and havng l inn' ineens to werk withii aCylinder, said eollflr being' located het,v l'een .1." sleeves for 'thealternate seating' the of Said Sleeves to close the opeiiinge o"sleeves.

ln a punip, a piston roel having; per Sage, sleeves nonnted laosely onthe roll; a eollaf' on the roll between said sleeve' and having oppositevalve Seats and a port Coin innnieating; with saitlL pefseage infllocated between Seial sente, the acljaeent ende et sa'zl sleeveshai-:ing valv portions hear l said seats, :nul parking' inea is on theto worlt within a cylinder.

6. ln a. pump, a piston rofl having' a paef; j two Sleeies'iuountefllees-ely on the ro: nnil having' 'flanges at their adjacent einlf' a Zhcollar on the rod between eaitl .Jleeves ald having' opposite valveser-.ts and a port hetween sen'l Seale eonlnniuienting' with Snitl "fainel' passage, eaitl 'tlanggee heine' see-.tahle said sente to eloee tl eopenings et tl peeking' Cups on Saifl Sleeves ha.'

' i in; awz y 'from one ano hen rings en .'eil on saifl sleevee for f.:said packing Cups between the riu je4 a ffl tleng'es.

l. n a piunp, a pieton rml having' a sage, opposite valve Seats on eaiilrofl. Suhl passage having! a port hetween Hait efeztfs, and sleevesineuirtefl loosely on the rorl lor llow ol fluir therethrough :nulraving; ineens to ei grep-e a Cylinder, sait Sleeves hzloeatetl atopposite Siders oitA saiil Seats to alternately against them. testimonywhereof I hereunto alilx my siwniture.

JOHN A. GROSVTJNGR.

